
Certified GKH Gardening Expert
Yellowing leaves may indicate a watering issue; too much or too little.
Adjust watering schedule and monitor the juniper for a return to normal color.
Water the juniper shrub in thoroughly at the time of planting and twice weekly for a month following planting. Decrease the frequency of watering so that you only irrigate the juniper once every week or two during periods of extended drought. Junipers are more likely to suffer from overwatering or diseases encouraged by excessive moisture than drought stress.
https://www.gardeningknowhow.com/ornamental/shrubs/juniper/skyrocket-juniper-plants.htm